When comparing GameMaker:Studio Marketplace vs Kenney Assets, the Slant community recommends Kenney Assets for most people. In the question“What are the best sources of royalty free game assets?”Kenney Assets is ranked 1st while GameMaker:Studio Marketplace is ranked 8th. The most important reason people chose Kenney Assets is:

All of the 20,000 game assets available on the site can be downloaded for free, they require no sign-up.